to me, a good way to tell if you have a high quality BP morph is to match it up against the morph's description, and see if it meets those traits. then you decide how well it matches up.

a killerbee is faded yellow, high blushing in the black spider pattern, and a faded head. look for the highest amount of blushing, the lightest head, and the most faded yellow coloration. or go for what you like =p. there is definitely "high quality" and "low quality" versions of a morph. one sells quickly because it's the best example of the morph, the other could obviously be the morph, but doesn't SCREAM "i'm a ___!" lol.

but as others said, in the end, if you think it's an awesome example of what YOU like in the morph, then work on bringing that out in breeding